Packing for rotating machine parts.



PATENTED APR. 9, 1907.

R. SOHULZ. PACKING FOR ROTATING MACHINE PARTS.

APPLICATION FILED APR-16.1906.

B 0 w 6 MUN w 1 WNW. I m 5 W PM H m W m w I u UNITED e lieleT N OFFICE.

I RICHARD SCHULZ, OF BERLIN, GERMANY.

PACKING FOR ROTATING MACHINE PARTS.

Specification of Letters Patent.

Patented April 9,1907.

Application filed April 16, 1906. Serial No. 312,009-

. this specification My invention relates to packings for rotating machine parts, and more particularly applicable in steam or pressure air turbines for rotating journals and the like, and has for its object to construct the arts so as to decrease the wear on the mac ine parts as well as increasethe life of the parts of the packing.

In the drawings, in which'like parts are similarly designated, Figure 1 shows one form of my arrangement of packing in section. Fig. 2 is a like view showing a modification. Fi 3 shows a modified form of mainring, igs. 4 and 5, modifications of means for'mounting the main rin Fig. 6, a modification of some of the auxi iary rings; Fig.7, a double packing, and Fig.8 a modification of F" 7.

hall of 516 views the structure of the packing is shown in vertical'longitudinal section.

Referrin more particularly to Fig. 1, A is a portion 0 a shaft or other rotating element,

, preferably, butnot necessarily, provided with a flange d, and B is the stationary member of the machine, in which the rotating element is'mounted or between which and the rotating element it is desired to use a packing. On the rotating element A is a main packing rin a, displace-able by the excess pressure of rivingfluid exerted on its one end and having a groove 0, into which rejects the head or endof a screw, pin, or t e like 0, to prevent the ring a from turning on the rotating element A, but permitting it to have a slight longitudinal movement on the rotating element. The auxiliary rings 1), ,of which any desired number may be used, are free to rotate on the rotating element and are located between the main ring a, non-rotatively mounted on A, and the stationary member B of the machine.

The main ring a may be provided with recesses m, in which are contamedcoilsprmgs e, that press against the flange d to urge the rings against the stationary member B and automatically compensate for wear.

In Fig. 2 the rotating element A, which may be hollow or not, is provided with a flange (11, having a beveled face (1 and the main ring a is prevented from rotatin by means of a key 9, which also permits sight longitudinal movement. The ring a is also provided with an inclined or beveled face 9,

between which and the faced of the flange d there is formed a groove V-shaped-in section,'in which is seated a hollow spring-ring f, surrounding the shaft that acts as a sub stitute for the springs, Fig. 1, to urge the acking against the stationary member B.

he auxihary rings 1), three of which are shown, have curved faces contacting with one another, as shown.

In Fig. 3 I have shown a structure similar to that shown-in Fig. 2, but in which the main ring a has a body portion 2 and a projecting flange 3, that liesalong A, giving to the ring -secti on the shape of an angle, and on the flange 3 of which the auxiliary ring or rings 1) are mounted.

Fig. 4 shows a modification of the means for preventingl the rotation of the main ring.

The ring a is ere provided with recesses re istering with similar recesses in the flange and a metal tube k is placed in the re istering recesses, actin .to key them toget er, and within each tn 0' k is a spring 6, urging the mainring a and auxiliary rings 1) against B. Here, as in the other cases, the main ring a is displaceable by the excess pressure of the driving fluid exerted on its outer end.

In Fig.- 5 the main ring a is provided with one or more lugs l, that project into one or more transverse notches 4 in flange d.

In Fig. 6 the main ring 11, having th .largest section, is angular and carries on its flange two auxiliary r ngs 6 fitting into one.

another or nested and of like or similar section, and the third ring b seats in the angle of the nextadjacent ringb and abuts against the fixed member B of the machine.

In-Fig. 7 is shown the arrangement of my packing to meet the condition where there is steam-pressure on both sides of the member B, the highest pressure being on the left-hand side. The member B is provided with two packing-crowns 5 and 6, removably held in place by screws 7 and 8, respectively. These flange 9 and threaded on its end.

crowns have internal flanges 9 and 10, respectively, against which the rings press. There are two sets of rings a b and a b, engaging the flanges 9 and l0,respectively. Themain ring a of the lirst set is slidably but nonrotatively held on shaft or drum A by means of the key 9, the springs or spring 6 in recesses or recess m-pressing against the 'llange (Z on the shaft or drum to urge the ring a toward flange 9. the angle on the flange 3" of ring a, which is extended beyond the stationary internal This threaded portion has screwed on it a ring 11, as shown, which serves the same purpose as flange d for the second set of packing-rings, of which the one a is slidably but non-rotatively mounted on A, the springs e pressing against 10, urging the main ring a and the auxiliary rings on the flange thereof against 10.

In the arrangement Fig. 8 the condition is met where there is a high pressure first on one side and then on the other side of the stationary member B, which member is provided with a ring 12 held in place by screws h and has an internal flang'e 13, against which two sets of packing-rings are urged, those on the left, 1), similar to the structures already described, being urged toward the right-against the flange 13. The other set urged toward the left, is mounted, as shown, an angle-piece '1'. being secured to the rotating element A by means of a screw or pin 4, and in the upstanding flange of the angle-piece is pin 72, entering a recess m, that prevents the main ring a from rotating on A. The

packing is exceedingly well adapted for rotating elements of large diameter and for high' speeds. The greater the speed of the rotating element A the greater should be the number of free sliding or auxiliary rings 7), and for a given speed the relative wear on the rings decreases with the increase in the number of rings used in a set.

In all of the figures it will be observed that I there is a main ring locked to the rotating element, so as to have a llmi'ted longitudinal shdmg motlon and one or more free auxiliary rings to rotate between the main ring and a stationary member, so that the friction will be distributed between the several rubbingfaces of the rings. The steam-pressure on the end of the main ring preferably, but not necessarily, assisted by auxiliary means, such as springs, holds the rings tightly together and against the fixed member B or a flange secured thereto. The several auxiliary rings will rotate according to the relative friction between their faces, and their speed of rotation will diminish according to the number used from the main ring toward the fixed member B. Such packings are particularly an licable to steam-turbines.

- i-Taving now described my invention, what The auxiliary rings 1) are seated in I claim, and desire to secure by Letters Patent, is

1. In a packing for rotating elements, the combination with the rotating element and the stationary member in which. said element .is mounted; of a main ring locked to the retating elemen'. and axially slidable thereon and an auxiliary free friction-ring between said main ring and stationary member, suhstal'itially as described.

2. In a packing, the combination with the rotating element and the stationary member in which said element rotates; of a main ring locked to and longitudinally slidable on the rotating element and free auxiliary frictionrings between said, main ring and stationary member, substantially as described.

3. In a packing, the combination with the rotating element and the stationary member in which the said element rotates; of a main ring locked to and longitudinally slidable on the element, free auxiliary rings between the main ring and member and means to urge the rings against the stationary member, substantially as described.

4. In a packing, the combination with the rotating element, a flange thereon, and the stationary member in which the element rotates; of a main ring locked to and longitudinally slidable on th rotating element, auxiliary free rings between the main ring and member and resilient means between the flange and main ring to urge the rings toward scribed.

5. In a packing, the combination with the rotating element and the stationary member in which the element rotates; of a main ring having a flange, means ,to lock the main ring to the rotating element and permit its longitudinal movement, and auxiliary rings mounted free onthe flange of the main ring and between it and the stationary member, substantially as described.

6. Ina packing, the combination with the rotatingelement and the stationary member in which the element rotates; of a main ring having a flange, means to lock the main ring 'to the rotating element and permlt longitudinal movement, a plurality of free auxiliary nested rings between the main ring and stationary member, substantially as described.

7. In a packing, the combination with the rotating element having a flange thereon and the stationary member in which it rotates; of a main ring having a flange, means to lock said ring to the element and permit longitudinal movement, springs between theflange on the element and main ring and free auxil iary nested flanged rings between the main ring and member,-substantially as described.

the stationary member, substantially as de- 8. The combination with the rotating ele- V ment and the stationary member in which the packing-rings, each set cooperating with an element rotates; of a plurality of sets of packing-rings each set composed of a main ring 1 longitudinally slidable on and non-rotatively locked to the rotating element, and free auxiliary friction-rings between the main rings and member, substantially as described.

9. The combination with the rotating element having aflange thereon and the stationary member in which said element is mo'gm'ted; of an internal flange on the stationary member, a main ring longitudinally slidable and non-rotatively docked to the rotating element, free auxiliary rings between the main ring and flange on said member, and resilient means between the flange on the element and main ring to urge the rings against the internal flange.

10. The combination with the rotating element having a flange and the stationary member in which said element rotates; of removable internal flanges secured to the stationary member, a plurality of sets of internal flange, the first set of said rings comprising a main flanged ring longitudinally "g against the first internal flange and a following set of packing-rings comprising a main ring and auxiliary rings and means between the two main rings to urge the following set of rings against the second internal flange, substantially as and for the purpose set forth.

In testimony that I claim the foregoing as my invention I have signed my name in presence of two subscribing witnesses.

RICHARD SCI-IULZ.

Witnesses JOHANNES HEIN, HENRY I'IASPER. 

